Title:
LIGHT EMITTING LAMP, LIGHTING APPARATUS HAVING THE LIGHT EMITTING LAMP, AND PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2005/022584
Kind Code:
A1
Abstract:
A light emitting lamp controllable to a target temperature, comprising a bulb part (2) and sealed parts (3a, 3b). The heat loss amount of the bulb part (2) due to convection and conduction which depends upon power consumption, the inner diameter of the bulb part (2), and the diameters and lengths of the sealed parts (3a, 3b) are pre-determined, and the outer diameter of the bulb part (2) is determined based on the heat loss amount, the inner diameter of the bulb part, the diameters of the sealed parts, and the lengths of the sealed parts so that the averaged value of the inner surface temperature of the bulb part (2) in light emission comes within the range of 900 to 1000&ring C.
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Inventors:
Takezawa, Takeshi c/o SEIKO EPSON CORPORATION 3-5 (Owa 3-Chome Suwa-sh, Nagano 02, 39285, JP)
Hashizume, Toshiaki c/o SEIKO EPSON CORPORATION 3-5 (Owa 3-Chome Suwa-sh, Nagano 02, 39285, JP)
Hashizume, Toshiaki c/o SEIKO EPSON CORPORATION 3-5 (Owa 3-Chome Suwa-sh, Nagano 02, 39285, JP)
Application Number:
PCT/JP2004/012430
Publication Date:
March 10, 2005
Filing Date:
August 23, 2004
Export Citation:
Assignee:
SEIKO EPSON CORPORATION (4-1 Nishi-Shinjuku 2-Chome, Shinjuku-Ku Tokyo, 11, 16308, JP)
International Classes:
G03B21/00; G03B21/14; H01J17/16; H01J61/30; H01J61/36; H01J61/86; G03B21/00; G03B21/14; H01J17/02; H01J61/30; H01J61/36; H01J61/84; (IPC1-7): H01J61/30; G03B21/14; H01J61/36
Attorney, Agent or Firm:
Kamiyanai, Masataka c/o Intellectual, Property Division (SEIKO EPSON CORPORATION 3-5 Owa 3-Chome, Suwa-Sh, Nagano 02, 39285, JP)
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